#include <iostream>
#include <cmath>

using namespace std;

int main() {
    int n;
    cin >> n;

    int cx = n / 2, cy = n / 2;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (abs(i - cx) + abs(j - cy) <= n / 2) {
                cout << '*';
            } else {
                cout << " ";
            }
        }
        cout << endl;
    }

    return 0;
}
